Manufacture of compound ingots.



Patented Ian. 30, |900.

No. @mL-7.

J. c. RUSSELL.

MANUFACTURE F CMPUUND INGOTS.

(Application led Oct. B, 1897.)

(NU Windel.)

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JAMES O. RUSSELL, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE- TIIIRD TO CHARLES A. FAGAN AND JOSEPH G. VILSAOK, OF SAME PLACE.

lVHilhlUFACTURE OF COMPOUND lNGO'l'S.

SPECIFICATION forming part of Letters Eatent No. 642,157, dated January SO, 1900.`

Application fled October 8, 1897. Serial No. 654,568, (No specimens.)

To @ZZ whom it may concern:

Be it known that IJAMES O. RUssELL,a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in the Manufacture of Metal Bodies; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to the manufacture of metal bodies,and has especial reference to the manufact-ure of what are known as coinpound or combination ingots and platesthat is to say,ingots and plates composed of layers orstrata of metal of different carbon content. Heretofore in the manufacture of such ingots and plates it has been exceedingly diificult and practicallyimpossible to effect aperfect union between the high and the loiv carbon layers in the finished plate withcutheating and hammering the ingots after they are formed, as the layers would pull away from each other during rolling, and, further, very high carbon layers could not be formed in these ingots on account of this pulling-away action of the several layers composing the ingot.

The object of my invention is to overcome these difficulties and to provide an ingot in Which the layers of different carbon content Will not become separated during or after such rolling; and it consists in the novel method hereinafter more specifically set forth and described, and particularly pointed out in the claim.

To enable others skilled in the art to which my invention appertains to practice the same, I YWill describe it more fully by reference to the accompanying` drawings, in Which- Figure l is a vertical section of a device for forming a tive-ply ingot. Fig. 2 is a like view showing the formed ingot. Fig. 3 is a crosssection on the line 3 3 of Fig. 2. Fig. Il is a longitudinal section of the ingot. Fig. 5 is a longitudinal section of the plate for forming the outside layers of the ingot.A Fig. 6 is a longitudinal section of a compound plate formed or rolled from the ingot. Fig. 7 is a vertical section of'a device for forming a threeply in got in the ordinaryingot-mold. Fig. 8 is alike view of theingot and mold. Fig. 9 is a cross-section ou the line 9 9 of Fig. S. Fig. l0 is a longitudinal section of the ingot.

Like letters indicate like parts in the several figures.

In Figs. 1, 2, 3, 4, 5, and 6 I have illustrated my invention as applied to the formation of five-ply hard-center ingots, but it is evident that three-ply ingots may be manufactured thereby as Well as ingots or plates containing more than live plies.

My invention is particularly adapted for the manufacture of compound ingots and plates having soft or low carbon outside plates or layers,and these in gots are preferably formed from a soft or low carbon plate @,Which is made of the required length and is bent transversely into U shape, having sides Z) b and end portion c, with a cavity CZ between them. The plate c; is provided Wit-h the notches c on one side to determine the points at which it is to be bent. The plate @after bendingis set in a verticalposition, With its end c resting upon the floor of the mill or pit,and a plate f, of soft or 10W carbon metal, is placed Within the cavity d at or about the center line thereof and held in such position by any suitable means, after which the U -shaped plate d and the plate f are suitably clamped together, although, if desired, the ordinary molds used for such purposes may be employed. The clamping device consists of end plates g g', placed against the edges of the sides b and the platef and held together by rings 7L 7L and Wedges t' driven between the plates g g and the rings. Hard or high carbon metal is noW poured into the spaces on each side of the plate f until said spaces are filled, when lthe same is allowed to cool, after which the end plates g g', rings h h, and Wedges i are removed and the ingot is ready for rolling into plates Z. The ingot 7c so formed consists of the soft or low carbon outside layers h, end portion c, soft or low carbon center layer j', and the hard or high carbon layers j.

Duringthe rollingof theingot tinto a plate the end portion c is presented to the rolls With the layers b b in contact with the operative faces thereof. This prevents any displacement or separation of the diiterent layers of the ingot from each other and enables a solid plate Z to be formed having the layers of different carbons firmly Welded and bound together. After the plate Z has been rolled to the required size the end portion c may be sheared off, as Well as the opposite end, and the plate trimmed to finished shape.

In Figs. 7, 8, 9, and 10 I have shown my invention applied for making three-plyingots Within the ordinary ingot-mold m, and it consists of an ingot having soft or 10W carbon outside layers connected by a protecting end portion with a hard or high carbon layer between them. These ingots are formed and rolled into plates in like manner, as above described, for the tive-ply ingots.

If desired, plates of diiterent carbon content may be inserted Within the cavity of the U-shaped plate and the Whole pack inserted into a furnace and heated, so as to join the plates together and form an ingot or pile, after which the ingot While heated may be rolled to the finished plate.

Various other modifications may be resorted to Without departing from the spirit of the invention or sacriicingany of its advantages.

Ingots made in accordance With the method hereinbefore described form the subject of a separate application iiled by me October ll, 1899, and numbered serially 733,259.

I claim- The method of forming compound plates, which consists in bending transversely a plate of low-carbon metal into U shape so as to form a protecting or-inclosing endportion,inserting metal of greater carbon content than the plate into the cavity formed by the bending, heating the body thus formed, and then rolling the same, the ingot during therolling operation being presented to the rolls closed end first and with the low-carbon sidesin Contact with the operative faces of the rolls.

In testimony whereof I, the said JAMES C. RUSSELL, have hereunto set my hand.

JAMES C. RUSSELL.

lVitnesses:

J. N. OooKn, A. BLAKELEY. 

